illumos gate

#include <sys/types.h>

#include <sys/socket.h>

#include <sys/un.h>

#include <unistd.h>

#include <assert.h>

#include <string.h>

#include <pthread.h>

#include <stdio.h>

#include <signal.h>

#include <ucred.h>

static void* echo_loop(void *arg)

{

    int sock = *(int*)arg;

    int rec;

    int sent;

    char buf[256];

    while ((rec = read(sock, buf, sizeof(buf)-1)) > 0) {

        buf[rec] = 0;

        printf("got '%s' %d\n", buf, rec);

        while (rec > 0) {

            sent = send(sock, buf, rec, 0);

            printf("sent %d bytes\n", sent);

            if (sent > 0)

                rec -= sent;

            else {

				printf("write failed\n");

                break;

			}

        }

    }

    printf("client is dead\n");

    close(sock);

    return NULL;

}

int main(int argc, char **argv)

{

    struct sockaddr_un saddr;

    int sock;

    int ret;

    int nc;

    signal(SIGPIPE, SIG_IGN);

    assert(argc > 1);

    saddr.sun_family = AF_UNIX;

    strcpy(saddr.sun_path, argv[1]);

    sock = socket(AF_UNIX, SOCK_STREAM, 0);

    assert(sock != -1);

    unlink(argv[1]);

    ret = bind(sock, (struct sockaddr*)&saddr, sizeof(saddr));

    assert(ret != -1);

    ret = listen(sock, SOMAXCONN);

    assert(ret != -1);

    while ((nc = accept(sock, NULL, 0)) != -1) {

        pthread_t pt;

        ucred_t *uc = NULL;

        printf("new client\n");

        if (getpeerucred(nc, &uc) != -1) {

            printf("remote: pid %ld, euid: %d, egid: %d\n",

                   ucred_getpid(uc),

                   ucred_geteuid(uc),

                   ucred_getegid(uc));

            ucred_free(uc);

        }

        pthread_create(&pt, NULL, echo_loop, &nc);

    }

    close(sock);

    unlink(argv[1]);

    return 0;

}